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This is ARO, an observatory used by NOAA
The Atmospheric Research Observatory (ARO) is ideally located because the surface wind almost always comes from the (grid) north or northeast, meaning ARO is usually upwind of the main station. And since the nearest populated areas are so far away, the air (and snow) studied at ARO is among the cleanest on Earth! Scientists can use this information as a baseline for their long-term climate monitoring research.
Several science groups use the ARO facility, but the primary tenant is the National Oceanic and Atmospheric Administration's Earth System Research Laboratory (NOAA/ESRL).
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